Cat bed



FIG. 1 is a top perspective view of a cat bed showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevation view, the right-side elevation view being a mirror image thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a bottom perspective view thereof.

The broken lines in the drawings depicts environmental subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a cat bed, as shown and described. 